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(function() {
function insertAfter(nodeToAdd, referenceNode)
{
if (referenceNode == document.body) {
document.body.appendChild(nodeToAdd);
return;
}
if (referenceNode.nextSibling)
referenceNode.parentNode.insertBefore(nodeToAdd, referenceNode.nextSibling);
else
referenceNode.parentNode.appendChild(nodeToAdd);
}
function positionedAncestor(node)
{
var ancestor = node.parentNode;
while (getComputedStyle(ancestor).position == 'static')
ancestor = ancestor.parentNode;
return ancestor;
}
function checkSubtreeExpectedValues(parent, failures)
{
var checkedLayout = checkExpectedValues(parent, failures);
Array.prototype.forEach.call(parent.childNodes, function(node) {
checkedLayout |= checkSubtreeExpectedValues(node, failures);
});
return checkedLayout;
}
function checkAttribute(output, node, attribute)
{
var result = node.getAttribute && node.getAttribute(attribute);
output.checked |= !!result;
return result;
}
function checkExpectedValues(node, failures)
{
var output = { checked: false };
var expectedWidth = checkAttribute(output, node, "data-expected-width");
if (expectedWidth) {
if (isNaN(expectedWidth) || Math.abs(node.offsetWidth - expectedWidth) >= 1)
failures.push("Expected " + expectedWidth + " for width, but got " + node.offsetWidth + ". ");
}
var expectedHeight = checkAttribute(output, node, "data-expected-height");
if (expectedHeight) {
if (isNaN(expectedHeight) || Math.abs(node.offsetHeight - expectedHeight) >= 1)
failures.push("Expected " + expectedHeight + " for height, but got " + node.offsetHeight + ". ");
}
var expectedOffset = checkAttribute(output, node, "data-offset-x");
if (expectedOffset) {
if (isNaN(expectedOffset) || Math.abs(node.offsetLeft - expectedOffset) >= 1)
failures.push("Expected " + expectedOffset + " for offsetLeft, but got " + node.offsetLeft + ". ");
}
var expectedOffset = checkAttribute(output, node, "data-offset-y");
if (expectedOffset) {
if (isNaN(expectedOffset) || Math.abs(node.offsetTop - expectedOffset) >= 1)
failures.push("Expected " + expectedOffset + " for offsetTop, but got " + node.offsetTop + ". ");
}
var expectedOffset = checkAttribute(output, node, "data-positioned-offset-x");
if (expectedOffset) {
var actualOffset = node.getBoundingClientRect().left - positionedAncestor(node).getBoundingClientRect().left;
if (isNaN(expectedOffset) || Math.abs(actualOffset - expectedOffset) >= 1)
failures.push("Expected " + expectedOffset + " for getBoundingClientRect().left offset, but got " + actualOffset + ". ");
}
var expectedOffset = checkAttribute(output, node, "data-positioned-offset-y");
if (expectedOffset) {
var actualOffset = node.getBoundingClientRect().top - positionedAncestor(node).getBoundingClientRect().top;
if (isNaN(expectedOffset) || Math.abs(actualOffset - expectedOffset) >= 1)
failures.push("Expected " + expectedOffset + " for getBoundingClientRect().top offset, but got " + actualOffset + ". ");
}
var expectedWidth = checkAttribute(output, node, "data-expected-client-width");
if (expectedWidth) {
if (isNaN(expectedWidth) || Math.abs(node.clientWidth - expectedWidth) >= 1)
failures.push("Expected " + expectedWidth + " for clientWidth, but got " + node.clientWidth + ". ");
}
var expectedHeight = checkAttribute(output, node, "data-expected-client-height");
if (expectedHeight) {
if (isNaN(expectedHeight) || Math.abs(node.clientHeight - expectedHeight) >= 1)
failures.push("Expected " + expectedHeight + " for clientHeight, but got " + node.clientHeight + ". ");
}
var expectedWidth = checkAttribute(output, node, "data-expected-scroll-width");
if (expectedWidth) {
if (isNaN(expectedWidth) || Math.abs(node.scrollWidth - expectedWidth) >= 1)
failures.push("Expected " + expectedWidth + " for scrollWidth, but got " + node.scrollWidth + ". ");
}
var expectedHeight = checkAttribute(output, node, "data-expected-scroll-height");
if (expectedHeight) {
if (isNaN(expectedHeight) || Math.abs(node.scrollHeight - expectedHeight) >= 1)
failures.push("Expected " + expectedHeight + " for scrollHeight, but got " + node.scrollHeight + ". ");
}
var expectedOffset = checkAttribute(output, node, "data-total-x");
if (expectedOffset) {
var totalLeft = node.clientLeft + node.offsetLeft;
if (isNaN(expectedOffset) || Math.abs(totalLeft - expectedOffset) >= 1)
failures.push("Expected " + expectedOffset + " for clientLeft+offsetLeft, but got " + totalLeft + ", clientLeft: " + node.clientLeft + ", offsetLeft: " + node.offsetLeft + ". ");
}
var expectedOffset = checkAttribute(output, node, "data-total-y");
if (expectedOffset) {
var totalTop = node.clientTop + node.offsetTop;
if (isNaN(expectedOffset) || Math.abs(totalTop - expectedOffset) >= 1)
failures.push("Expected " + expectedOffset + " for clientTop+offsetTop, but got " + totalTop + ", clientTop: " + node.clientTop + ", + offsetTop: " + node.offsetTop + ". ");
}
var expectedDisplay = checkAttribute(output, node, "data-expected-display");
if (expectedDisplay) {
var actualDisplay = getComputedStyle(node).display;
if (actualDisplay != expectedDisplay)
failures.push("Expected " + expectedDisplay + " for display, but got " + actualDisplay + ". ");
}
var expectedPaddingTop = checkAttribute(output, node, "data-expected-padding-top");
if (expectedPaddingTop) {
var actualPaddingTop = getComputedStyle(node).paddingTop;
// Trim the unit "px" from the output.
actualPaddingTop = actualPaddingTop.substring(0, actualPaddingTop.length - 2);
if (actualPaddingTop != expectedPaddingTop)
failures.push("Expected " + expectedPaddingTop + " for padding-top, but got " + actualPaddingTop + ". ");
}
var expectedPaddingBottom = checkAttribute(output, node, "data-expected-padding-bottom");
if (expectedPaddingBottom) {
var actualPaddingBottom = getComputedStyle(node).paddingBottom;
// Trim the unit "px" from the output.
actualPaddingBottom = actualPaddingBottom.substring(0, actualPaddingBottom.length - 2);
if (actualPaddingBottom != expectedPaddingBottom)
failures.push("Expected " + expectedPaddingBottom + " for padding-bottom, but got " + actualPaddingBottom + ". ");
}
var expectedPaddingLeft = checkAttribute(output, node, "data-expected-padding-left");
if (expectedPaddingLeft) {
var actualPaddingLeft = getComputedStyle(node).paddingLeft;
// Trim the unit "px" from the output.
actualPaddingLeft = actualPaddingLeft.substring(0, actualPaddingLeft.length - 2);
if (actualPaddingLeft != expectedPaddingLeft)
failures.push("Expected " + expectedPaddingLeft + " for padding-left, but got " + actualPaddingLeft + ". ");
}
var expectedPaddingRight = checkAttribute(output, node, "data-expected-padding-right");
if (expectedPaddingRight) {
var actualPaddingRight = getComputedStyle(node).paddingRight;
// Trim the unit "px" from the output.
actualPaddingRight = actualPaddingRight.substring(0, actualPaddingRight.length - 2);
if (actualPaddingRight != expectedPaddingRight)
failures.push("Expected " + expectedPaddingRight + " for padding-right, but got " + actualPaddingRight + ". ");
}
var expectedMarginTop = checkAttribute(output, node, "data-expected-margin-top");
if (expectedMarginTop) {
var actualMarginTop = getComputedStyle(node).marginTop;
// Trim the unit "px" from the output.
actualMarginTop = actualMarginTop.substring(0, actualMarginTop.length - 2);
if (actualMarginTop != expectedMarginTop)
failures.push("Expected " + expectedMarginTop + " for margin-top, but got " + actualMarginTop + ". ");
}
var expectedMarginBottom = checkAttribute(output, node, "data-expected-margin-bottom");
if (expectedMarginBottom) {
var actualMarginBottom = getComputedStyle(node).marginBottom;
// Trim the unit "px" from the output.
actualMarginBottom = actualMarginBottom.substring(0, actualMarginBottom.length - 2);
if (actualMarginBottom != expectedMarginBottom)
failures.push("Expected " + expectedMarginBottom + " for margin-bottom, but got " + actualMarginBottom + ". ");
}
var expectedMarginLeft = checkAttribute(output, node, "data-expected-margin-left");
if (expectedMarginLeft) {
var actualMarginLeft = getComputedStyle(node).marginLeft;
// Trim the unit "px" from the output.
actualMarginLeft = actualMarginLeft.substring(0, actualMarginLeft.length - 2);
if (actualMarginLeft != expectedMarginLeft)
failures.push("Expected " + expectedMarginLeft + " for margin-left, but got " + actualMarginLeft + ". ");
}
var expectedMarginRight = checkAttribute(output, node, "data-expected-margin-right");
if (expectedMarginRight) {
var actualMarginRight = getComputedStyle(node).marginRight;
// Trim the unit "px" from the output.
actualMarginRight = actualMarginRight.substring(0, actualMarginRight.length - 2);
if (actualMarginRight != expectedMarginRight)
failures.push("Expected " + expectedMarginRight + " for margin-right, but got " + actualMarginRight + ". ");
}
return output.checked;
}
window.checkLayout = function(selectorList, outputContainer)
{
var result = true;
if (!selectorList) {
document.body.appendChild(document.createTextNode("You must provide a CSS selector of nodes to check."));
return;
}
var nodes = document.querySelectorAll(selectorList);
nodes = Array.prototype.slice.call(nodes);
nodes.reverse();
var checkedLayout = false;
Array.prototype.forEach.call(nodes, function(node) {
var failures = [];
checkedLayout |= checkExpectedValues(node.parentNode, failures);
checkedLayout |= checkSubtreeExpectedValues(node, failures);
var container = node.parentNode.className == 'container' ? node.parentNode : node;
var pre = document.createElement('pre');
if (failures.length) {
pre.className = 'FAIL';
result = false;
}
pre.appendChild(document.createTextNode(failures.length ? "FAIL:\n" + failures.join('\n') + '\n\n' + container.outerHTML : "PASS"));
var referenceNode = container;
if (outputContainer) {
if (!outputContainer.lastChild) {
// Inserting a text node so we have something to insertAfter.
outputContainer.textContent = " ";
}
referenceNode = outputContainer.lastChild;
}
insertAfter(pre, referenceNode);
});
if (!checkedLayout) {
document.body.appendChild(document.createTextNode("FAIL: No valid data-* attributes found in selector list : " + selectorList));
return false;
}
return result;
}
})();
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